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Subjectkernel BUG in vmscan.c in 2.4.0-test10-pre4

System is a 486DX2 66 MHz, 16 MB ram running redhat 7.0 with the
latest (Oct 20) patches. The kernel was compiled for it on a faster
machine, the only additional patch is the netfilter mss patch.


Here are the 2 instances of this bug:

Oct 21 15:16:42 morel kernel: kernel BUG at vmscan.c:102!
Oct 21 15:16:42 morel kernel: invalid operand: 0000
Oct 21 15:16:42 morel kernel: CPU: 0
Oct 21 15:16:42 morel kernel: EIP: 0010:[try_to_swap_out+268/816]
Oct 21 15:16:42 morel kernel: EFLAGS: 00010292
Oct 21 15:16:42 morel kernel: eax: 0000001c ebx: c0025d18 ecx: 00000000 edx: 00000000
Oct 21 15:16:42 morel kernel: esi: 00000100 edi: 00000001 ebp: 0077c045 esp: c0257eb4
Oct 21 15:16:42 morel kernel: ds: 0018 es: 0018 ss: 0018
Oct 21 15:16:42 morel kernel: Process kswapd (pid: 2, stackpage=c0257000)
Oct 21 15:16:42 morel kernel: Stack: c01c4ced c01c4ecc 00000066 4003d000 c0277990 40037000 40040000 c01eee40
Oct 21 15:16:42 morel kernel: 00001700 c0126ddb c0277990 c0e6a530 4003c000 c0bbf0f0 00000004 40037000
Oct 21 15:16:42 morel kernel: c0e6a530 c0277990 00000004 c0bbf0f0 40437000 c0c00400 40040000 40040000
Oct 21 15:16:42 morel kernel: Call Trace: [tvecs+7069/53520] [tvecs+7548/53520] [swap_out_vma+315/448] [swap_out_mm+60/112] [swap_out+291/384] [refill_inactive+201/368] [do_try_to_free_pages+98/144]
Oct 21 15:16:42 morel kernel: [tvecs+7937/53520] [kswapd+129/336] [empty_bad_page+0/4096] [kernel_thread+35/48]
Oct 21 15:16:42 morel kernel: Code: 0f 0b 83 c4 0c f7 c5 02 00 00 00 74 17 6a 68 68 cc 4e 1c c0


Oct 21 20:33:01 morel kernel: kernel BUG at vmscan.c:102!
Oct 21 20:33:01 morel kernel: invalid operand: 0000
Oct 21 20:33:01 morel kernel: CPU: 0
Oct 21 20:33:01 morel kernel: EIP: 0010:[try_to_swap_out+268/816]
Oct 21 20:33:01 morel kernel: EFLAGS: 00010292
Oct 21 20:33:01 morel kernel: eax: 0000001c ebx: c0022044 ecx: 00000000 edx: 00000004
Oct 21 20:33:01 morel kernel: esi: 00005500 edi: 00000001 ebp: 00697045 esp: c0257eb4
Oct 21 20:33:01 morel kernel: ds: 0018 es: 0018 ss: 0018
Oct 21 20:33:01 morel kernel: Process kswapd (pid: 2, stackpage=c0257000)
Oct 21 20:33:01 morel kernel: Stack: c01c4ced c01c4ecc 00000066 40130000 c02776c0 4012f000 40135000 c0177570
Oct 21 20:33:01 morel kernel: c010a21f c0126ddb c02776c0 c0275f90 4012f000 c06b14bc 00000004 4012f000
Oct 21 20:33:01 morel kernel: c0275f90 c02776c0 00000004 c06b14bc 4052f000 c06b3400 40135000 40135000
Oct 21 20:33:01 morel kernel: Call Trace: [tvecs+7069/53520] [tvecs+7548/53520] [read_intr+0/320] [handle_IRQ_event+47/96] [swap_out_vma+315/448] [swap_out_mm+60/112] [swap_out+291/384]
Oct 21 20:33:01 morel kernel: [refill_inactive+275/368] [do_try_to_free_pages+98/144] [tvecs+7937/53520] [kswapd+129/336] [empty_bad_page+0/4096] [kernel_thread+35/48]
Oct 21 20:33:01 morel kernel: Code: 0f 0b 83 c4 0c f7 c5 02 00 00 00 74 17 6a 68 68 cc 4e 1c c0

Here is the boot up log:

Oct 21 19:59:32 morel kernel: Loaded 12026 symbols from /boot/System.map-2.4.0-test10.
Oct 21 19:59:32 morel kernel: Symbols match kernel version 2.4.0.
Oct 21 19:59:32 morel kernel: Loaded 16 symbols from 2 modules.
Oct 21 19:59:32 morel kernel: Linux version 2.4.0-test10 (reimer@harmony) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Sat Oct 21 14:26:35 EDT 2000
Oct 21 19:59:32 morel kernel: BIOS-provided physical RAM map:
Oct 21 19:59:32 morel kernel: BIOS-e801: 000000000009f000 @ 0000000000000000 (usable)
Oct 21 19:59:32 morel kernel: BIOS-e801: 0000000000f00000 @ 0000000000100000 (usable)
Oct 21 19:59:32 morel kernel: On node 0 totalpages: 4096
Oct 21 19:59:32 morel kernel: zone(0): 4096 pages.
Oct 21 19:59:32 morel kernel: zone(1): 0 pages.
Oct 21 19:59:32 morel kernel: zone(2): 0 pages.
Oct 21 19:59:32 morel kernel: Kernel command line: auto BOOT_IMAGE=linuxn ro root=304 BOOT_FILE=/boot/vmlinuz-2.4.0-test10 idebus=33
Oct 21 19:59:32 morel kernel: ide_setup: idebus=33
Oct 21 19:59:32 morel kernel: Initializing CPU#0
Oct 21 19:59:32 morel kernel: Console: colour VGA+ 80x25
Oct 21 19:59:32 morel kernel: Calibrating delay loop... 33.18 BogoMIPS
Oct 21 19:59:32 morel kernel: Memory: 14356k/16384k available (943k kernel code, 1640k reserved, 54k data, 168k init, 0k highmem)
Oct 21 19:59:32 morel kernel: Checking if this processor honours the WP bit even in supervisor mode... Ok.
Oct 21 19:59:32 morel kernel: Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes)
Oct 21 19:59:32 morel kernel: Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Oct 21 19:59:32 morel kernel: Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
Oct 21 19:59:32 morel kernel: Inode-cache hash table entries: 1024 (order: 1, 8192 bytes)
Oct 21 19:59:32 morel kernel: CPU: Intel 486 DX/2 stepping 05
Oct 21 19:59:32 morel kernel: Checking 'hlt' instruction... OK.
Oct 21 19:59:32 morel kernel: POSIX conformance testing by UNIFIX
Oct 21 19:59:32 morel kernel: PCI: PCI BIOS revision 2.00 entry at 0xfdb58, last bus=0
Oct 21 19:59:32 morel kernel: PCI: Using configuration type 1
Oct 21 19:59:32 morel kernel: PCI: Probing PCI hardware
Oct 21 19:59:32 morel kernel: Linux NET4.0 for Linux 2.4
Oct 21 19:59:32 morel kernel: Based upon Swansea University Computer Society NET3.039
Oct 21 19:59:32 morel kernel: Starting kswapd v1.8
Oct 21 19:59:33 morel kernel: pty: 256 Unix98 ptys configured
Oct 21 19:59:33 morel kernel: Uniform Multi-Platform E-IDE driver Revision: 6.31
Oct 21 19:59:33 morel kernel: ide: Assuming 33MHz system bus speed for PIO modes
Oct 21 19:59:33 morel kernel: CMD640: ignored by ide_scan_pci_device() (uses own driver)
Oct 21 19:59:33 morel kernel: ide0: buggy cmd640b interface on PCI (type1), config=0x5e
Oct 21 19:59:33 morel kernel: ide1: serialized, secondary interface okay
Oct 21 19:59:33 morel kernel: cmd640: drive0 timings/prefetch(on) preserved, clocks=2/3/3
Oct 21 19:59:33 morel kernel: cmd640: drive1 timings/prefetch(on) preserved<4>keyboard: Timeout - AT keyboard not present?
Oct 21 19:59:33 morel kernel: keyboard: Timeout - AT keyboard not present?
Oct 21 19:59:33 morel kernel: , clocks=3/6/14
Oct 21 19:59:33 morel kernel: cmd640: drive2 timings/prefetch(on) preserved, clocks=3/8/9
Oct 21 19:59:33 morel kernel: cmd640: drive3 timings/prefetch(on) preserved, clocks=3/8/9
Oct 21 19:59:33 morel kernel: hda: ST31220A, ATA DISK drive
Oct 21 19:59:33 morel kernel: hdc: TOSHIBA CD-ROM XM-6102B, ATAPI CDROM drive
Oct 21 19:59:33 morel kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Oct 21 19:59:33 morel kernel: ide1 at 0x170-0x177,0x376 on irq 15 (serialized with ide0)
Oct 21 19:59:33 morel kernel: hda: 2116296 sectors (1084 MB) w/256KiB Cache, CHS=2099/16/63
Oct 21 19:59:33 morel kernel: Partition check:
Oct 21 19:59:33 morel kernel: hda: [PTBL] [524/64/63] hda1 hda2 hda3 hda4
Oct 21 19:59:33 morel kernel: Real Time Clock Driver v1.10d
Oct 21 19:59:33 morel kernel: Software Watchdog Timer: 0.05, timer margin: 60 sec
Oct 21 19:59:33 morel kernel: PPP generic driver version 2.4.1
Oct 21 19:59:33 morel kernel: Registered PPPoX v0.5
Oct 21 19:59:34 morel kernel: Registered PPPoE v0.6.3
Oct 21 19:59:34 morel kernel: NET4: Linux TCP/IP 1.0 for NET4.0
Oct 21 19:59:34 morel kernel: IP Protocols: ICMP, UDP, TCP
Oct 21 19:59:34 morel kernel: IP: routing cache hash table of 512 buckets, 4Kbytes
Oct 21 19:59:34 morel kernel: TCP: Hash tables configured (established 1024 bind 1024)
Oct 21 19:59:34 morel kernel: ip_conntrack (128 buckets, 1024 max)
Oct 21 19:59:34 morel kernel: ip_tables: (c)2000 Netfilter core team
Oct 21 19:59:34 morel kernel: NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Oct 21 19:59:34 morel kernel: VFS: Mounted root (ext2 filesystem) readonly.
Oct 21 19:59:34 morel kernel: Freeing unused kernel memory: 168k freed
Oct 21 19:59:34 morel kernel: Adding Swap: 34264k swap-space (priority -1)
Oct 21 19:59:34 morel kernel: 3c503.c:v1.10 9/23/93 Donald Becker (becker@cesdis.gsfc.nasa.gov)
Oct 21 19:59:34 morel kernel: eth0: 3c503 at i/o base 0x250, node 00 20 af 48 be 89, using external xcvr.
Oct 21 19:59:34 morel kernel: eth0: 3c503/16 - 16kB RAM, 8kB shared mem window at 0xd8000-0xd9fff.
Oct 21 19:59:35 morel kernel: eth1: 3c503 at i/o base 0x330, node 00 20 af 48 6d b0, using internal xcvr.
Oct 21 19:59:35 morel kernel: eth1: 3c503/16 - 16kB RAM, 8kB shared mem window at 0xdc000-0xddfff.
Oct 21 19:59:35 morel kernel: eth2: 3c503 at i/o base 0x300, node 00 20 af 48 56 67, using external xcvr.
Oct 21 19:59:35 morel kernel: eth2: 3c503/16 - 16kB RAM, 8kB shared mem window at 0xc8000-0xc9fff.
Oct 21 19:59:35 morel kernel: eth3: 3c503 at i/o base 0x310, node 00 20 af 48 54 95, using external xcvr.
Oct 21 19:59:35 morel kernel: eth3: 3c503/16 - 16kB RAM, 8kB shared mem window at 0xcc000-0xcdfff.


Regards,
Chris Reimer

--

Christopher Reimer
http://www.doe.carleton.ca/~reimer/
chris_reimer@bigfoot.com
PGP Public Key available at web site, PGP Keyservers, ID 171F8CF1,
or "finger"ing reimer@www.doe.carleton.ca

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